1. The American Society of Mechanical Engineers, “Letter Symbols for Acoustics”, New York, N. Y. 1959.
2. American Standards Association, New York, N. Y. 1960: Incorporated, “Acoustical Terminology”; C 61. 1–1961 Quantities and Units Used in Electricity, 1966.
3. Bodea, E.: Giorgis rationales MKS-Maßsystem mit Dimensionskohärenz für Mechanik, Elektromagnetik, Thermik, fundiert auf Kalantaroff’s (LTQ)-System, 2. Aufl. Basel: Birkhäuser. 1949.
4. Bridgeman, P. W.: Theorie der physikalischen Dimensionen. Leipzig, Berlin: Teubner. 1932; Dimensional analysis. New Haven and London: Yale University Press. January.
5. Cornelius, P.: The rationalized Giorgi system with absolute volt and ampere as applied in electrical engineering. Philips techn. Rev. 10 (1948) 79–86.